How much horsepower does a high-flow catalytic converter add?

However, adding a high-flow catalytic converter can boost your horsepower by 4hp to 10 hp. A high-flow cat is ideal if your vehicle is heavily modified or turbocharged since the extra airflow can help in adding more power. A high-flow catalytic converter is better than a normal cat.

Does high-flow cat make difference?

Hi-flow aftermarket cats have shown to produce significant power gain, especially for high-end performance applications. However this is at the cost of less emission control over the factory stock units, so it only suitable and is advisable for race and off road applications.

Will p0420 code clear itself?

p0420 by itself is a mild nag code, cancel it and go on with your life if you need to kick the can down the road, it does not hurt anything.

Are high flow cats worth it?

Do high-flow catalytic converters add more horsepower? Adding a high-flow catalytic converter to your car can add horsepower since it does free up the exhaust flow overall. However, it’s usually recommend as final piece to your exhaust system, especially if your car is making at least 20 percent more horsepower.

Do high flow cats make it louder?

Well-Known Member. High flow cats will be a tad bit louder for sure. Depending on what you find loud, it may not be a significant amount however.

Is a high flow catalytic converter legal?

The vehicle is specifically included in the application list for the catalytic converter and the converter is legal for use in California.

Can you use a catalytic converter as a muffler?

Yes, removing the catalytic converter will make an exhaust system louder. Although the muffler controls the noise and this control does not change even if you remove the catalytic converter. But the catalytic converter does suppress some sound coming out of the exhaust that adds up with the muffler.